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UniAndBidirectionSyncCode.ets</font>
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<pre><span class="s0">/* 
 * Copyright (c) 2023 Huawei Device Co., Ltd. 
 * Licensed under the Apache License, Version 2.0 (the &quot;License&quot;); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0 
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an &quot;AS IS&quot; BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License. 
 */</span>
<span class="s1">import </span><span class="s2">{ </span><span class="s1">ChildCompLink </span><span class="s2">} </span><span class="s1">from </span><span class="s3">'./ComponentLink'</span>
<span class="s1">import </span><span class="s2">{ </span><span class="s1">ChildCompProp </span><span class="s2">} </span><span class="s1">from </span><span class="s3">'./ComponentProp'</span>
<span class="s1">import </span><span class="s2">{ </span><span class="s1">ViewCodeText </span><span class="s2">} </span><span class="s1">from </span><span class="s3">'../../../../../commoncomponents/ViewCodeText'</span>

<span class="s0">// 初始化圆形的可设置颜色</span>
<span class="s1">export const ColorData </span><span class="s4">= </span><span class="s2">{</span>
  <span class="s1">GREY</span><span class="s4">: </span><span class="s3">'#eebebeba'</span><span class="s4">,</span>
  <span class="s1">BLUE</span><span class="s4">: </span><span class="s3">'#4A90E2'</span><span class="s4">,</span>
  <span class="s1">PINK</span><span class="s4">: </span><span class="s3">'#8DF8BEBE'</span><span class="s4">,</span>
  <span class="s1">RED</span><span class="s4">: </span><span class="s3">'#FFF30823'</span><span class="s4">,</span>
<span class="s2">}</span>

<span class="s5">@</span><span class="s1">Component</span>
<span class="s1">export struct UniAndBidirectionSyncCode </span><span class="s2">{</span>
  <span class="s0">// 初始化圆形颜色的状态变量</span>
  <span class="s5">@</span><span class="s1">State circleColor</span><span class="s4">: </span><span class="s1">string </span><span class="s4">= </span><span class="s1">ColorData</span><span class="s4">.</span><span class="s1">GREY</span><span class="s4">;</span>

  <span class="s1">build</span><span class="s6">() </span><span class="s2">{</span>
    <span class="s1">Column</span><span class="s6">(</span><span class="s2">{ </span><span class="s1">space</span><span class="s4">: </span><span class="s7">10 </span><span class="s2">}</span><span class="s6">) </span><span class="s2">{</span>
      <span class="s1">Column</span><span class="s6">(</span><span class="s2">{ </span><span class="s1">space</span><span class="s4">: </span><span class="s7">10 </span><span class="s2">}</span><span class="s6">) </span><span class="s2">{</span>
        <span class="s0">// 点击查看源码</span>
        <span class="s1">ViewCodeText</span><span class="s6">(</span><span class="s2">{ </span><span class="s1">webSrc</span><span class="s4">: </span><span class="s1">$rawfile</span><span class="s6">(</span><span class="s3">'UniAndBidirectionSyncCode.ets.html'</span><span class="s6">) </span><span class="s2">}</span><span class="s6">)</span>
        <span class="s1">Text</span><span class="s6">(</span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.string.parent_component'</span><span class="s6">))</span>
          <span class="s4">.</span><span class="s1">fontSize</span><span class="s6">(</span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.float.tips_font_size'</span><span class="s6">))</span>
          <span class="s4">.</span><span class="s1">width</span><span class="s6">(</span><span class="s3">'100%'</span><span class="s6">)</span>
          <span class="s4">.</span><span class="s1">textAlign</span><span class="s6">(</span><span class="s1">TextAlign</span><span class="s4">.</span><span class="s1">Start</span><span class="s6">)</span>
          <span class="s4">.</span><span class="s1">margin</span><span class="s6">(</span><span class="s7">10</span><span class="s6">)</span>
        <span class="s1">Text</span><span class="s6">(</span><span class="s1">$r</span><span class="s6">(</span><span class="s3">&quot;app.string.uni_and_bidirection_sync_tips&quot;</span><span class="s6">))</span>
          <span class="s4">.</span><span class="s1">fontColor</span><span class="s6">(</span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.color.tips_font_color'</span><span class="s6">))</span>
          <span class="s4">.</span><span class="s1">fontSize</span><span class="s6">(</span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.float.tips_font_size'</span><span class="s6">))</span>
          <span class="s4">.</span><span class="s1">width</span><span class="s6">(</span><span class="s3">'100%'</span><span class="s6">)</span>
          <span class="s4">.</span><span class="s1">textAlign</span><span class="s6">(</span><span class="s1">TextAlign</span><span class="s4">.</span><span class="s1">Center</span><span class="s6">)</span>
        <span class="s1">Circle</span><span class="s6">()</span>
          <span class="s4">.</span><span class="s1">size</span><span class="s6">(</span><span class="s2">{ </span><span class="s1">width</span><span class="s4">: </span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.float.circle_size'</span><span class="s6">)</span><span class="s4">, </span><span class="s1">height</span><span class="s4">: </span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.float.circle_size'</span><span class="s6">) </span><span class="s2">}</span><span class="s6">)</span>
          <span class="s4">.</span><span class="s1">fill</span><span class="s6">(</span><span class="s1">this</span><span class="s4">.</span><span class="s1">circleColor</span><span class="s6">)</span>
        <span class="s0">// 点击更新父组件的圆形颜色变量，父组件更新，子组件@Link以及@Prop继承的变量同步</span>
        <span class="s1">Button</span><span class="s6">() </span><span class="s2">{</span>
          <span class="s1">Text</span><span class="s6">(</span><span class="s1">$r</span><span class="s6">(</span><span class="s3">&quot;app.string.uni_and_bidirection_sync_btn&quot;</span><span class="s6">))</span>
            <span class="s4">.</span><span class="s1">fontColor</span><span class="s6">(</span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.color.button_text_color'</span><span class="s6">))</span>
            <span class="s4">.</span><span class="s1">fontSize</span><span class="s6">(</span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.float.button_text_size'</span><span class="s6">))</span>
            <span class="s4">.</span><span class="s1">width</span><span class="s6">(</span><span class="s3">'100%'</span><span class="s6">)</span>
            <span class="s4">.</span><span class="s1">textAlign</span><span class="s6">(</span><span class="s1">TextAlign</span><span class="s4">.</span><span class="s1">Center</span><span class="s6">)</span>
        <span class="s2">}</span>
        <span class="s4">.</span><span class="s1">id</span><span class="s6">(</span><span class="s3">'pinkColorBtn'</span><span class="s6">)</span>
        <span class="s4">.</span><span class="s1">height</span><span class="s6">(</span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.float.button_height'</span><span class="s6">))</span>
        <span class="s4">.</span><span class="s1">type</span><span class="s6">(</span><span class="s1">ButtonType</span><span class="s4">.</span><span class="s1">Capsule</span><span class="s6">)</span>
        <span class="s4">.</span><span class="s1">backgroundColor</span><span class="s6">(</span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.color.button_background_color'</span><span class="s6">))</span>
        <span class="s4">.</span><span class="s1">onClick</span><span class="s6">(() </span><span class="s4">=&gt; </span><span class="s2">{</span>
          <span class="s1">this</span><span class="s4">.</span><span class="s1">circleColor </span><span class="s4">= </span><span class="s1">ColorData</span><span class="s4">.</span><span class="s1">PINK</span><span class="s4">;</span>
        <span class="s2">}</span><span class="s6">)</span>
      <span class="s2">}</span>
      <span class="s0">// 单向同步子组件</span>
      <span class="s1">ChildCompProp</span><span class="s6">(</span><span class="s2">{ </span><span class="s1">circleColor</span><span class="s4">: </span><span class="s1">this</span><span class="s4">.</span><span class="s1">circleColor </span><span class="s2">}</span><span class="s6">)</span>
      <span class="s0">// 双向同步子组件</span>
      <span class="s1">ChildCompLink</span><span class="s6">(</span><span class="s2">{ </span><span class="s1">circleColor</span><span class="s4">: </span><span class="s1">$circleColor </span><span class="s2">}</span><span class="s6">)</span>
    <span class="s2">}</span>
    <span class="s4">.</span><span class="s1">padding</span><span class="s6">(</span><span class="s7">10</span><span class="s6">)</span>
    <span class="s4">.</span><span class="s1">border</span><span class="s6">(</span><span class="s2">{ </span><span class="s1">radius</span><span class="s4">: </span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.float.component_radius'</span><span class="s6">)</span><span class="s4">, </span><span class="s1">color</span><span class="s4">: </span><span class="s1">Color</span><span class="s4">.</span><span class="s1">Grey</span><span class="s4">, </span><span class="s1">width</span><span class="s4">: </span><span class="s1">$r</span><span class="s6">(</span><span class="s3">'app.float.border_width'</span><span class="s6">) </span><span class="s2">}</span><span class="s6">)</span>
  <span class="s2">}</span>
<span class="s2">}</span></pre>
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